Portable air compressor



FIG. 1 is a perspective view of a portable air compressor showing my new design;

FIG. 2 is a perspective view taken from the side opposite that shown in FIG. 1;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a perspective view of a modified form of the portable air compressor shown in FIG. 1.

The fragmentary broken line representation of a hose in FIGS. 1, 2 and 5 is for purposes of illustration only. 

The ornamental design for a portable air compressor, substantially as shown and described. 